scholarly journals Application of a combined model simulation to determine ecological corridors for western black-crested gibbons in the Hengduan Mountains, China

2021 ◽  
Vol 128 ◽  
pp. 107826
Author(s):  
Jiacheng Wu ◽  
Claudio O. Delang ◽  
Yijie Li ◽  
Quan Ye ◽  
Jie Zhou ◽  
...  
Keyword(s):  
Model Simulation ◽  
Hengduan Mountains ◽  
Combined Model ◽  
Ecological Corridors ◽  
Crested Gibbons

Hierarchical Optimization Model of Cloud Manufacturing Services Combination

2013 ◽  
Vol 464 ◽  
pp. 345-351 ◽  
Author(s):  
Han Zhang ◽  
Rui Feng Guo ◽  
Cong Geng
Keyword(s):  
Model Simulation ◽  
Cloud Manufacturing ◽  
Coarse Grained ◽  
Hierarchical Optimization ◽  
Combined Model ◽  
Implementation Processes ◽  
Proposed Model ◽  
Annealing Algorithm ◽  
Resource Combination

In this paper, a new mathematical combined model and the corresponding solution algorithm were proposed by analyzing the characteristics of services resource combination in cloud manufacturing. Aiming at avoiding problems of uncertainty, coarse-grained, diversity and dynamic in the process of services resource combination, a hierarchical model based on the hierarchical manufacturing implementation processes was firstly proposed. Then, quality of service (QoS) has been chosen to evaluate effects of services combination. Finally, a annealing algorithm was developed to solve the proposed model. Simulation experiment results prove the validity of the model and algorithm.

Model, simulation and experiments for a Buoyancy Organic Rankine Cycle

2020 ◽  
Vol 92 (1) ◽  
pp. 10906
Author(s):  
Jeroen Schoenmaker ◽  
Pâmella Gonçalves Martins ◽  
Guilherme Corsi Miranda da Silva ◽  
Julio Carlos Teixeira
Keyword(s):  
Model Simulation ◽  
Organic Rankine Cycle ◽  
Thermodynamic Cycle ◽  
Rankine Cycle ◽  
Test Body ◽  
Working Fluid ◽  
Proof Of Concept ◽  
Energy Scenario ◽  
New Type ◽  
Fluid Reservoir

Organic Rankine Cycle (ORC) systems are increasingly gaining relevance in the renewable and sustainable energy scenario. Recently our research group published a manuscript identifying a new type of thermodynamic cycle entitled Buoyancy Organic Rankine Cycle (BORC) [J. Schoenmaker, J.F.Q. Rey, K.R. Pirota, Renew. Energy 36, 999 (2011)]. In this work we present two main contributions. First, we propose a refined thermodynamic model for BORC systems accounting for the specific heat of the working fluid. Considering the refined model, the efficiencies for Pentane and Dichloromethane at temperatures up to 100 °C were estimated to be 17.2%. Second, we show a proof of concept BORC system using a 3 m tall, 0.062 m diameter polycarbonate tube as a column-fluid reservoir. We used water as a column fluid. The thermal stability and uniformity throughout the tube has been carefully simulated and verified experimentally. After the thermal parameters of the water column have been fully characterized, we developed a test body to allow an adequate assessment of the BORC-system's efficiency. We obtained 0.84% efficiency for 43.8 °C working temperature. This corresponds to 35% of the Carnot efficiency calculated for the same temperature difference. Limitations of the model and the apparatus are put into perspective, pointing directions for further developments of BORC systems.

Performance Prediction of Asphalt Pavement Based on the Combined Model

CICTP 2020 ◽  
2020 ◽  
Author(s):  
Wenwen Feng ◽  
Guanglai Jin ◽  
Haiting Liu ◽  
Zhixiang Zhang
Keyword(s):  
Performance Prediction ◽  
Asphalt Pavement ◽  
Combined Model

FLOWS AT VIADROSTRAGUVANNI BASED ON COMBINED MODEL

2017 ◽  
Vol 23 (5(1)) ◽  
pp. 87-97
Author(s):  
T. Misyura ◽  
V. Zavialov ◽  
O. Lobok ◽  
N. Popova ◽  
Y. Zaporozhets
Keyword(s):  
Combined Model

Quantitative Ranking of Ligand Binding Kinetics with a Multiscale Milestoning Simulation Approach

2018 ◽  
Author(s):  
Benjamin R. Jagger ◽  
Christoper T. Lee ◽  
Rommie Amaro
Keyword(s):  
Molecular Dynamics ◽  
Drug Discovery ◽  
Small Molecule ◽  
Brownian Dynamics ◽  
Model Simulation ◽  
Computational Cost ◽  
Lead Selection ◽  
Delta G ◽  
Dynamics Simulations

<p>The ranking of small molecule binders by their kinetic (kon and koff) and thermodynamic (delta G) properties can be a valuable metric for lead selection and optimization in a drug discovery campaign, as these quantities are often indicators of in vivo efficacy. Efficient and accurate predictions of these quantities can aid the in drug discovery effort, acting as a screening step. We have previously described a hybrid molecular dynamics, Brownian dynamics, and milestoning model, Simulation Enabled Estimation of Kinetic Rates (SEEKR), that can predict kon’s, koff’s, and G’s. Here we demonstrate the effectiveness of this approach for ranking a series of seven small molecule compounds for the model system, -cyclodextrin, based on predicted kon’s and koff’s. We compare our results using SEEKR to experimentally determined rates as well as rates calculated using long-timescale molecular dynamics simulations and show that SEEKR can effectively rank the compounds by koff and G with reduced computational cost. We also provide a discussion of convergence properties and sensitivities of calculations with SEEKR to establish “best practices” for its future use.</p>

CONSIDERATION OF MODELS AND MECHANISMS OF PUBLIC ADMINISTRATION OF PROCUREMENT OF GOODS, WORKS AND SERVICES IN CONSTRUCTION IN UKRAINE

2018 ◽  
Vol 1 (13) ◽  
pp. 131-142
Author(s):  
Tetyana Konstantinovna Mitropan
Keyword(s):  
Public Administration ◽  
Construction Industry ◽  
High Efficiency ◽  
Public Procurement ◽  
Combined Model ◽  
Single Body ◽  
Construction Products ◽  
Model Of Management ◽  
Decentralized Model ◽  
Centralized Model

The article presents the questions of reviewing models and mechanisms of public administration in the procurement of goods, works and services in the field of construction. A comparative analysis of the types of public procurement mechanisms in construction, based on a set of features, has shown the superiority of a centralized type of mechanism that facilitates the introduction of efficient and flexible procurement methods, for example, the conclusion of framework agreements. The author’s vision of the mechanism of state building purchases, in the form of a conceptual model and system differences, is proposed. It is determined that a decentralized model of public procurement management involves the independent implementation by purchasers of procurement, that is, allows each customer to procure goods, works and services in the field of construction. The centralized model of public administration is characterized by the implementation of public procurement in order to provide the general needs of a single body on public procurement, that is, customers commission the implementation of public procurement on their behalf, a centralized body. According to the combined model of management, public procurement in the construction industry takes place under contracts implemented under the centralized model, and the direct ordering and receipt of goods, works, or services takes place according to the rules of a decentralized model. It is noted that according to the system-wide understanding of the mechanism of public administration in the procurement of goods, works and services in the field of construction, it represents a set of specialized management technologies (methods, techniques and tools) that ensure the organization of the process of public procurement of construction products by authorized agents. The direction of this process is determined by the need to implement the principles of vali- dity and innovation, fair choice of the best bidding, prevention of corruption and ensuring the high efficiency of the implementation of public public procurement.

Sign in / Sign up

Export Citation Format

Share Document